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Preview: Electronics Infoline

Electronics Infoline



A giant collection of electronics projects and schematics on the web!



Last Build Date: Sun, 04 Dec 2016 17:05:18 +0000

 



App note: EPIC: Electro-Pyrotechnic Initiator Chip Resistor

Sun, 04 Dec 2016 17:00:10 +0000

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Pinned onto Dangerous Prototypes

An application note on Vishay’s electro-pyrotechnic resistor chip made from thin film technology. Link here (PDF) In this paper we will show how the EPIC’s thin film construction is unique in providing pyrotechnic engineers with outstanding performances in terms of firing energy, firing time, reproducibility and reliability, easy set up, no fire/all fire ratio, assembly, […](image)



Free PCB Sunday: Pick your PCB

Sun, 04 Dec 2016 16:00:13 +0000

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Pinned onto Dangerous Prototypes

We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. Our PCBs are made through Seeed Studio’s Fusion board service. This week two random commenters will […](image)



App note: Noise analysis for high-speed op amps

Sun, 04 Dec 2016 13:00:39 +0000

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Pinned onto Dangerous Prototypes

An application report on op-amp noise analysis from Texas Instruments. Link here (PDF) As system bandwidths have increased, an accurate estimate of the noise contribution for each element in the signal channel has become increasingly important. Many designers are not, however, particularly comfortable with the calculations required to predict the total noise for an op […](image)



Skill Sunday: Arrays

Sun, 04 Dec 2016 08:39:00 +0000

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Pinned onto Freetronics

This week on Skill Sunday we will be learning about using arrays with Arduino. Using arrays in your code can make your code faster and much more readable. For example, rather than defining a new variable for each pin used in your Arduino code, having an array allows you to assign these all to one […](image)



App note: Infrared remote control implementation with MSP430FR4xx

Sun, 04 Dec 2016 00:05:08 +0000

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Pinned onto Dangerous Prototypes

Infrared remote control implementation with MSP430FR4xx application note from TI: This application report provides an insight into several of the most frequently used infrared protocols and especially their flexible implementation using the TI MSP430FR4xx series of low-power microcontrollers. The MSP430FR4xx microcontrollers are primarily targeted at remote control application that are equipped with infrared modulation function […](image)



Gesture Controlled Smart Home

Sat, 03 Dec 2016 09:11:00 +0000

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Pinned onto Freetronics

It is already possible to easily control devices in your house using an app on your phone, but what if you could turn on the lights or open the blinds with a simple movement of your hands? This is exactly what Joaquim has done using an MYO gesture control armband. Joaquim has explained the details […](image)



Design for a Wideband, Differential Transimpedance DAC Output

Fri, 02 Dec 2016 18:30:43 +0000

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Pinned onto EEWeb

High-speed digital-to-analog converters (DACs) commonly offer a complementary current output signal. Most output interface implementations use either a resistive load and/or a transformer to convert this current source signal to a voltage. Where a DC-coupled interface is required, a carefully designed differential transimpedance stage can offer an attractive alternative. Design considerations and options will be […](image)



Wrist thrusters let you fly through the water effortlessly

Fri, 02 Dec 2016 14:11:39 +0000

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Pinned onto Arduino Blog

These small arm-mounted propeller units can carry a skin diver through the water with minimal effort. YouTuber “PeterSripol” had only a week to prepare for his trip to Hawaii. Rather than purchase a set of fins or a snorkel, he instead hooked up two T100 thrusters that he had lying around to wrist straps. In his setup, these thrusters […](image)



Bertan/Spellman 225-20R HV power supply teardown

Fri, 02 Dec 2016 13:08:11 +0000

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Pinned onto Dangerous Prototypes

Kerry Wong did a teardown of a Bertan 225-20R 20kV high voltage power supply: I just picked up another high voltage power supply, this time it is a working Bertan/Spellman 225-20R 20kV one. Unlike the Bertan 205A-05R that I did a teardown with last time which was entirely analog, this one can be controlled digitally […](image)



Blinking Christmas Lights

Fri, 02 Dec 2016 04:31:51 +0000

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Pinned onto Build Electronic Circuits

Christmas is coming up, so why not set aside an hour or two to build this blinking Christmas lights circuit? This circuit is easy to build and it’s something you can put to use right away. I built this and hung it in the window, something my girlfriend loved! The blinking part of the circuit […](image)



Adjusting clock with alarm, hygrometer & thermometer on 1.8″ ST7735 display

Fri, 02 Dec 2016 00:17:16 +0000

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Pinned onto Dangerous Prototypes

Nicu Florica blogged about his adjusting clock with alarm, hygrometer and thermometer on 1.8″ ST7735 display: I use feature from article Another adjusting clock with alarm & thermometer using DS3231 on 1.8″ ST7735 display and change reading internal temperature of DS3231 with DHT22 senzor (AM2302), but you can use a cheaper and not very precise DHT11 […](image)



Adding an “extra sense” with rangefinders

Thu, 01 Dec 2016 20:31:23 +0000

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Pinned onto Arduino Blog

Using ultrasonic sensors attached to a person’s arm, researchers have found a way to let you “feel” distant objects. The concept of this project is surprisingly simple, but as shown in the test video below, seems to work quite well. Using an Arduino Uno to coordinate everything, when rangefinders see a nearby object, like a wall, […](image)



This wireless game controller looks like a rug

Thu, 01 Dec 2016 19:46:09 +0000

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Pinned onto Arduino Blog

Cut in the shape of a gamepad, this controller sits on the floor for kids to enjoy! Maker Jegatheesan Soundarapandian had gotten bored with computer games, and decided he, or rather his daughter, needed a new way to interact with the PC. What he came up with was a controller covered in cloth, with switches embedded between […](image)



How to run your ESP8266 for years on a battery

Thu, 01 Dec 2016 15:40:18 +0000

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Pinned onto Dangerous Prototypes

Here’s a detailed article on how to run an ESP8266 for a long time on a battery by Marco Schwartz: For most of the projects I am building with the ESP8266 WiFi chip, I usually don’t care too much about the power consumption aspect. I for example build data loggers that are constantly connected to the […](image)



Calibration of a 3-Phase Energy Meter Board on the ADE7754

Wed, 30 Nov 2016 21:00:37 +0000

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Pinned onto EEWeb

A 3-phase energy meter can interface with different services like 3-phase 4-wire, 3-phase 3-wire, and 3-phase 4-wire with 2½ elements. It can also provide active, reactive, and apparent energy calculations as well as power quality measurements, voltage rms, and current rms. This application note describes the different steps to calibrate a 3-phase 4-wire, 3-element energy […](image)



Making beats on a tiny Arduino DJ controller

Wed, 30 Nov 2016 16:54:42 +0000

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Pinned onto Arduino Blog

Electronic music seems to be ripe for hacking, as a new device can be fun as well as quite useful. Imgur user “fatcookies” decided to create a small DJ controller using an Arduino Nano, six push buttons, three potentiometers, and four configurable LEDs. In this setup, each input is fed into the Arduino, then sent to a computer over […](image)



Qinsi-QS5100 Sn63Pb37 solder profile

Wed, 30 Nov 2016 14:46:04 +0000

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Pinned onto Dangerous Prototypes

Alan Hawse from IOT Expert writes, “About 2 years ago, I bought a Qinsi QS5100 reflow oven from China via Amazon.com.  My decision was based almost completely on the nice youtube video that Ian Lesnet from Dangerous Prototypes posted about his results.  After I got the oven, I successfully built a series of Physics Lab […](image)



Water Detection System

Wed, 30 Nov 2016 11:43:00 +0000

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Pinned onto Freetronics

A water leak can often be a warning of imminent catastrophic failure with many appliances such as a washing machine or dishwasher. With this simple water detection system not only could you quickly detect appliance faults, but you could also set the system up to notify you if it is raining and you have left […](image)



Professional Hi-Fi 15W Tube Amplifier circuit

Wed, 30 Nov 2016 04:54:34 +0000

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Pinned onto Gadgetronicx

I have come up with another amplifier circuit which is capable of delivering 15 Watts output power. I have built this using my favorite Pentode just like my previous circuits. This one is a big project with several sub-circuits, so I`m gonna go through each sub-circuit separately AMPLIFIER  CIRCUIT: First let`s go through the amplifier […](image)



This Arduino machine will judge how sick your ollies are

Tue, 29 Nov 2016 21:22:18 +0000

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Pinned onto Arduino Blog

In skateboarding, the ollie is a fundamental trick used to leap onto, over or off obstacles, or over gaps of unfriendly terrain such as grass or stairs. But how do you know just how sick your ollie actually was? Josh Sheldon has a solution. The Maker has built a device that judges the sickness of your ollie and visualizes your score, rewarding the best ones with […](image)



Turn an old payphone into a boombox for ’90s hits

Tue, 29 Nov 2016 16:14:06 +0000

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Pinned onto Arduino Blog

If you grew up in the ’90s and would love to play some of your favorite hit songs through something a bit more nostalgic than your smartphone, perhaps you can do what “digital alchemist” Fuzzy Wobble has done and transform an old-school payphone into a fully-functional boombox. Fuzzy Wobble was able to get his hands on an inexpensive payphone and hacked […](image)



Big F’n 3D printer build

Tue, 29 Nov 2016 15:12:11 +0000

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Pinned onto Dangerous Prototypes

Dan Beaven blogged about his big 3D printer build: Summary of Features: 8 Cubic foot print volume (capable of larger with minor changes – i.e bigger cast aluminum plate) – The reason I chose 1/4″ Cast Aluminum plate was to make sure it was dimensionally stable when heated.  Anything else will most likely warp over […](image)



Temperature alarm for boiling milk

Tue, 29 Nov 2016 00:39:28 +0000

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Pinned onto Dangerous Prototypes

Domen Ipavec shares his temperature alarm for boiling milk in the project log forum: Anyone who has ever boiled milk on the stove knows, that it has a nasty habit of overflowing. That is why I created the temperature alarm for boiling milk to be used my mother. The temperature alarm uses attiny841 microcontroller and […](image)



QuadBot is a 3D-printable walking robot for everyone

Mon, 28 Nov 2016 21:30:47 +0000

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Pinned onto Arduino Blog

If you think building a walking robot is impossible, perhaps this little guy will change your mind! With platforms like the various flavors of Arduino, robotics has become accessible for many more people. Walking robots, however, can still be challenging. Especially when it comes to electronics and programming, one has some fairly complicated mechanisms to figure […](image)



MicroConverter I2C Compatible Interface

Mon, 28 Nov 2016 20:00:43 +0000

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Pinned onto EEWeb

This Technical Note describes the hardware slave and software master implementation of an I2C (inter integrated circuit) compatible interface using the MicroConverter. This technical Note also contains example code showing how a master and a slave can communicate with each other using the MicroConverter I2C compatible interface. I2C is a two-wire serial communication system developed […](image)



An Arduino tachometer for your older vehicle

Mon, 28 Nov 2016 19:13:10 +0000

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Pinned onto Arduino Blog

Unlike most cars today, deepsyx’s old Opel Astra did not have a tachometer. So what’s a Maker to do? Build your own, of course. To accomplish this, deepsyx used an Arduino Uno along with a few LEDs. The first LED turns on at 4000 RPM, while the others light up with every 500 RPM increment. At 5800 RPM, however, all the LEDs flash as a warning. There’s even a serial output of the RPM […](image)



Frequently asked questions on power supplies

Mon, 28 Nov 2016 17:00:18 +0000

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Pinned onto Build Electronic Circuits

[Question]: I have a 3A power supply, will it break my 500mA circuit? No. A 3A power supply will not force 3A into your circuit. A 3A power supply will supply up to 3A of current. It’s your circuit that decides how much of that current it will actually use. [Question]: My device says 5V […](image)



Harry Potter fans create a fully-functioning smart wand

Mon, 28 Nov 2016 16:03:52 +0000

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Pinned onto Arduino Blog

In the Harry Potter series, a Muggle is a person who lacks any sort of magical ability. Growing up reading these books, one can only imagine what it would be like to cast spells using a wand. Well, wonder no more as a group of NYC Muggles decided to build their own smart wand that can ‘magically’ control devices […](image)



ADC — Jupiter Modular Receiver

Mon, 28 Nov 2016 06:00:00 +0000

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Pinned onto QRPHB

SECTION 8  —ADCClick for the Master Index to this project Radio astronomy requires a receiver output data stream to make sense of what you receive. Computer programs may convert the data into graphs, FFTs, spectrograms, or pool it with other data in hopes of digging the signal out of the noise. At this point, I’m […](image)



App note: TPS25810 Charging Port Over USB Type-C™

Sun, 27 Nov 2016 17:00:31 +0000

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Pinned onto Dangerous Prototypes

Allow more current from USB Type-C port, an application note from Texas Instruments utilizing TPS25810 and TPS2544 USB port manager. Link here (PDF) The TPS25810 is a USB Type-C downstream facing port (DFP) controller that monitors the USB TypeC™ configuration channel (CC) lines to determine when a USB device is attached. When the upstream facing […](image)



App note: bq77905 20S cell stacking configuration

Sun, 27 Nov 2016 13:00:58 +0000

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Pinned onto Dangerous Prototypes

Application note from Texas Instruments on their bq77905 ultralow power stackable battery protector. Link here (PDF) The bq77905 is a 3-5S Low Power Protector with easy stacking capabilities for higher than 5S cell battery packs. This document provides an example for setting up a stacking configuration with the bq77905 and exhibits detailed analysis of the […](image)



App note: Universal motor drive with PIC16 microcontrollers

Sun, 27 Nov 2016 07:51:57 +0000

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Pinned onto Dangerous Prototypes

An open-loop speed control TRIAC-driven universal motor driver board design from Microchip, app note here: This application note presents the design of an open-loop speed control TRIAC-driven universal motor driver board using a variety of core independent peripherals on an 8-bit microcontroller. The complete source code and reference design material are included.   An open-loop […](image)



Skill Sunday: Uploading an Arduino Sketch over Bluetooth

Sat, 26 Nov 2016 21:29:00 +0000

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Pinned onto Freetronics

Have you ever stuck an Arduino in a hard to get place such as under the house and then realised that you want to upload a firmware revision? This can be a very frustrating situation, however, with the simple addition of a Bluetooth module it is possible to avoid this problem. Amazingly it is possible […](image)



Graphics LCD based on Microcontroller

Sat, 26 Nov 2016 14:00:43 +0000

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Pinned onto EEWeb

The LCD reference design is developed using the Kinetis KL28Z through the standalone peripheral module FlexIO. The polling method is used to copy data from SRAM or flash to FlexIO’s shifter buffer. Image Kinetis board is powered by an ARM® Cortex-M0, providing up to 96 MHz CPU performance besides supporting ultra-low power. KL28Z’s FlexIO emulates […](image)



Updating the KLN89B

Sat, 26 Nov 2016 11:18:37 +0000

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Pinned onto Dangerous Prototypes

Dmitry Grinberg writes, “Updating a 1996 plane GPS the 2016 way.  Reverse engineering of old proprietary data cards, formats, binaries, creating of new tools to perform updates and their final open-source release.” More details at Dmitry Grinberg’s blog. Via the contact form. Dmitry Grinberg writes, “Updating a 1996 plane GPS the 2016 way.  Reverse engineering of […](image)



Lightning Detector

Sat, 26 Nov 2016 04:44:00 +0000

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Pinned onto Freetronics

Wouldn’t it be awesome to be able to sense and track lighting strikes using Arduino? Typically lightning detectors are very expensive, however, runtimeprojects has developed a cheap system for detecting lighting using only an Arduino Uno and a few resistors. Impressively the circuit can detect lightning as far away as 20km! At a basic level […](image)



ELM327 Circuit Construction

Fri, 25 Nov 2016 18:30:43 +0000

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Pinned onto EEWeb

When constructing an electronic circuit, it is often best to build it in stages, testing each as you proceed. The following pages provide typical voltages that you might expect as you build the ELM327 Example Application circuit, first with no integrated circuits installed, and then with all in places. Hopefully, it will help you to […](image)



How to design and program the PCA9629A advanced stepper motor controller

Wed, 23 Nov 2016 21:00:46 +0000

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Pinned onto EEWeb

Stepper motors are brushless and very reliable, since there are no contact brushes inside the motor. Therefore, the life of the motor is simply dependent on the life of the mechanical bearing. A stepper motor is a digital version of the electric motor that moves one step with one digital input pulse at a time. […](image)



A 3D-printed lunar phase clock for your nightstand

Wed, 23 Nov 2016 17:26:17 +0000

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Pinned onto Arduino Blog

“Since there isn’t a supermoon everyday, make one for your bedside table!” This is exactly what G4lile0 set out to do using a 3D printer, an Arduino and some open-source tools. The result was a moon phase clock consisting of a 3D-printed model and an LED strip to create the lunar phases. The lights are driven by an Arduino that precisely calculates which […](image)



DIY Photo booth using Raspberry Pi for your parties

Tue, 22 Nov 2016 05:36:39 +0000

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Pinned onto Gadgetronicx

  If you are looking for some super cool DIY projects using Raspberry Pi, you are in the right place. Am pretty sure that this cool Raspberry Pi Photo booth will make a great addition to your party. Before I proceed I want to convey my thanks to Chris Evans for permitting me to write on […](image)



3D Printed Arduino UV Meter

Tue, 22 Nov 2016 04:07:00 +0000

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Pinned onto Freetronics

With warmer summer months approaching (at least for us in Australian) it is becoming more important to be sun smart. What better way to start being sun smart than to build your own Arduino UV Meter! Impressively this project also has an inbuilt breathalyser! The keychain uses an OLED display a ESP-1 WiFi module along […](image)



Kinetis Migration Guide From KE0x to KE1x

Mon, 21 Nov 2016 20:00:12 +0000

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Pinned onto EEWeb

The Kinetis E family provides a highly scalable portfolio of robust 5-V MCUs ranging from the 20-MHz ARM® Cortex®-M0+ MCUs to the 168-MHz ARM Cortex-M4 MCUs. With a power supply of 2.7 V ~ 5.5 V and the focus on exceptional EMC/ESD robustness, the Kinetis E family is well-suited for a wide range of applications […](image)



Create your own Red Dwarf Talkie Toaster replica

Mon, 21 Nov 2016 18:17:04 +0000

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Pinned onto Arduino Blog

In the Red Dwarf TV series, Talkie Toaster is a monomaniacal talking toaster that tries to steer every conversation to the subject of toast. Now, YouTuber “slider2732″ has gone ahead and built a chatty appliance of his own. To accomplish this, the Maker embedded a PIR sensor into the toaster’s lever that communicates with an Arduino Pro […](image)



The Orbitalochka is a solar-powered satellite synth

Mon, 21 Nov 2016 17:05:04 +0000

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Pinned onto Arduino Blog

This model satellite is both strange and mesmerizing with folding solar panels and a FM transmitter. Media artist Dmitry Morozov, aka ::vtol::, is back with his latest kinetic sound object, this one resembling a satellite. The Orbitalochka hangs from the ceiling and broadcasts sound via an FM transmitter and a built-in speaker. These noises are based on the position of […](image)



Measuring AC power with the Industruino PROTO

Mon, 21 Nov 2016 07:02:37 +0000

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Pinned onto Arduino Blog

Industruino PROTO–now available on our online store–joined the AtHeart Program back in 2015 with hopes of combining industrial automation components and the simplicity of Arduino. This robust DIN-rail mountable, Leonardo-compatible controller enables you to take your existing Arduino projects and swiftly transform them into permanent installations. The prototyping area and screw connectors allow you to install your own circuitry and reliably connect to […](image)



HTML5 Mandelbrot Generator

Mon, 21 Nov 2016 01:37:00 +0000

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Pinned onto Dilshan R Jayakody

This quick post is to introduce “HTML5 Mandelbrot Generator“, which is simple JavaScript application to generate Mandelbrot set and Julia set fractals in HTML5 complaint web browsers. This application is derived from Mandel source code (which is available at http://www.cylog.org) and it covers most of the features available in that original application. Online version of […](image)



App note: Sensorless speed stabilizer for a DC motor

Sun, 20 Nov 2016 17:00:23 +0000

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Pinned onto Dangerous Prototypes

Precision Microdrives’ sensorless speed sense by exploiting speed dependent back EMF voltage. Link here Motor speed is a parameter of a DC motor that is often measured and controlled, usually through additional sensors and with closed loop feedback. This method of speed control requires some form of speed sensor, normally mounted on the motor shaft. […](image)



App note: Lifetime of DC vibration motors (MTTF & FIT)

Sun, 20 Nov 2016 13:00:22 +0000

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Pinned onto Dangerous Prototypes

DC vibration motors failure analysis by Precision Microdrives. Link here Reliability is an important consideration for engineers and product designers. It is also very context specific. For example consider a car, which is made from lots of individual components. If the radio antenna should fail, the car still operates. However this is not the case […](image)



Building a “laser sky” effect generator with Arduino

Sat, 19 Nov 2016 21:32:37 +0000

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Pinned onto Arduino Blog

Bouncing a laser off of a spinning mirror creates an amazing effect with smoke and fog, but YouTuber “Normal Universe” made it even better with an Arduino. This video starts out by introducing the concept of “laser sky,” which seems like a fun idea. There is, however, a chance that the mirrors wouldn’t spin, potentially […](image)



IO-Link® Servo Driver

Sat, 19 Nov 2016 14:00:36 +0000

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Pinned onto EEWeb

The MAXREFDES37# IO-Link® servo driver provides 5V power, four PWM outputs and four digital inputs for control of up to four 5V servo motors. IO-Link offers the ability to replace pneumatic actuators, and their compressed air lines, in industrial applications. With added level translation, the digital inputs allow for interfacing to binary position or status […](image)



36dB power attenuator for 20W

Sat, 19 Nov 2016 01:40:46 +0000

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Pinned onto Dangerous Prototypes

Lex PH2LB designed and built a 36dB power attenuator for 20W using PA1B power attenuator calculator: The attenuator can handle a maximum power of 20 watt and is used to reduce the power of a 5 watt transceiver. At first I did not realized why Lex designed the attenuator for 20 W. Like many HAMs I […](image)



Teslapathic! Hackers build a brain-controlled Tesla

Fri, 18 Nov 2016 21:43:45 +0000

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Pinned onto Arduino Blog

Using an electroencephalography (EEG) headset and gyroscopic tracking, researchers have created a mind-controlled Tesla Model S. Self-driving cars seem to be all the rage these days in technology circles, but, as part of Cal Hacks 3.0, researchers have instead figured out how to drive a car using brain waves. This hack takes the form of […](image)



Load Share Controller For N+1 Redundant, Hot-Swappable Application

Fri, 18 Nov 2016 18:30:48 +0000

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Pinned onto EEWeb

Load sharing is a technique commonly used when powering loads requiring low voltage and high current; for this reason a modular power system is built where two (or more) power supplies or DC-DC converters are paralleled and supply the load. Sharing the output currents is useful to equalize the thermal stress of the different modules […](image)



Teen helps friend with a brain injury communicate again

Thu, 17 Nov 2016 19:38:50 +0000

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Pinned onto Arduino Blog

After an accident, Ethan Kadish was paralyzed. His friend, 14-year-old Jacob Smilg, came up with a simple device to help him communicate. Several years ago, Kadish was struck by lightning, and lost control over his body. Communication with the world took the form of eye blinks for “yes” and “no,” which gave Smilg an idea […](image)



A wakeup light for kids

Thu, 17 Nov 2016 15:53:54 +0000

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Pinned onto Arduino Blog

In order to convince his kids to stay in bed just a little longer, Maker Ralph Crutzen has created a “wakeup light” using an Arduino Mega and an RGB LED strip. Those of us that have toddlers know that they can wake up very early. If you’d like to get some more sleep without leaving them […](image)



25W Quasi-Resonant Flyback Converter For Set-top Box Application Using The L6565

Wed, 16 Nov 2016 21:00:13 +0000

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Pinned onto EEWeb

Set-Top Boxes are growing very fast and they are becoming very popular in all Countries either for satellite or cable decoding. Hence the market is asking for solutions having high cost effectiveness, providing for good performances, low noise, small volumes at low cost. The Quasi-resonant operation and the high flexibility of the L6565 make it […](image)



GPS Disciplined Oscillator review and teardown

Wed, 16 Nov 2016 17:05:38 +0000

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Pinned onto Dangerous Prototypes

Andy Brown did a teardown of a GPS Disciplined Oscillator: The design did actually surprise me. I was expecting to see an OCXO pulled from something else together with a modern GPS unit and an MCU to co-ordinate the synchronisation all mounted on a custom PCB. What we’ve actually got is an entire Symmetricom GPSDO pulled […](image)



Analog Capacitor ESR Tester

Wed, 16 Nov 2016 16:53:44 +0000

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Pinned onto Electrtonics DIY

I finally got round to making my capacitor ESR tester this week after finding a nice simple 5 transistor version. Unfortunately, for me, the design was only SMD so, I decided to replicate his schematic in Eagle PCB using a through hole component design. I will not be going into much detail regarding ESR or […](image)



This machine sends messages using common chemicals

Wed, 16 Nov 2016 15:07:33 +0000

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Pinned onto Arduino Blog

Stanford researchers led by post-doctoral fellow Nariman Farsad have built a machine that sends text messages using common chemicals. If you’re building a project, and need to send a signal from one component to another, solutions generally involve wiring them together, or some sort of radio, perhaps Bluetooth or Wi-Fi. Farsad, however, has been working on something […](image)



MPPT Solar Charger Testing II

Tue, 15 Nov 2016 22:49:42 +0000

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Pinned onto Soldernerd

It’s time to follow up on the MPPT Solar Charger project. Progress has been slow since I’m currently working full time and doing a master’s degree at the same time. Given that this blog has previously been something close to a 50% job at times things will necessarily slow down a bit. But all the […](image)



Skintillates: Temporary tattoos with embedded electronics

Tue, 15 Nov 2016 21:18:56 +0000

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Pinned onto Arduino Blog

Developed by a team of UC Berkeley students, Skintillates is a wearable technology that mimics tattoos. When you think of temporary tattoos, you likely think of something that comes out of a gumball dispenser, or perhaps “art” that you got on a spring break trip. As interesting as those may be, Skintillates is taking things […](image)



PolySync launches open-source kit for autonomous car development

Tue, 15 Nov 2016 18:42:54 +0000

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Pinned onto Arduino Blog

If you’re tired of waiting around to get an autonomous vehicle, PolySync’s Open Source Car Control Project (OSCC) development kit can be had for under $1000. Autonomous cars are still in their infancy, and can cost upwards of $100,000. If you’re willing to do some of the work yourself—and trust a machine you modified to […](image)



Arduino Animatronics

Tue, 15 Nov 2016 01:23:00 +0000

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Pinned onto Freetronics

One of the great things about Arduino is the wide range of projects it can be used for. One of these unique projects is Mathew Harrell’s giant lego animatronics. Mathew’s animatronic lego figures are controlled by an Arduino Uno and use a number of servo motors and speakers to talk and move. To find out […](image)



Pulse-Processing Electronics for Single-Photon Counting

Mon, 14 Nov 2016 20:00:40 +0000

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Pinned onto EEWeb

Single-photon counting is a productive technique for measuring the intensity of light when the signal is weak. By using a fast photomultiplier tube to detect the light and equally fast electronics to process the signal, the arrival of individual photons can be detected and counted. Photon resolving times of the order of 10 ns accommodate […](image)



An awesome 3D-printed Daft Punk helmet

Mon, 14 Nov 2016 19:03:53 +0000

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Pinned onto Arduino Blog

Though it’s been done before, this 3D-printed Thomas Bangalter helmet is absolutely amazing! Daft Punk hasn’t toured in over a decade, but their music and general look seems to be becoming more and more popular. Perhaps this is due, in some small part, to the fact that Makers can now build a very good replica of […](image)



Roast coffee to perfection with an Arduino and Android app

Mon, 14 Nov 2016 18:24:54 +0000

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Pinned onto Arduino Blog

After winning the South African National Barista Championship in 2009, Neil Maree decided to actually start a company to make coffee roasting equipment. Genio was the result, and after some work, his machines can now roast coffee to perfection using recipe input via an Android app. Once instructions are transferred, a heavily modified Arduino Due controls the […](image)



SMD edge connectors

Mon, 14 Nov 2016 15:37:29 +0000

Pinned onto Dangerous PrototypesFacelesstech has written an article describing a technique he used for connecting two boards together. More details at Facelesstech’s blog. Check out the video after the break. Facelesstech has written an article describing a technique he used for connecting two boards together. More details at Facelesstech’s blog. Check out the video after the break. Read more Here [...]



Robot lets your dog walk itself using Arduino and sausage

Mon, 14 Nov 2016 15:19:37 +0000

Pinned onto Arduino BlogAfter recently meeting each another in Cologne, Simone Giertz and Laura Kampf decided to put their creative minds together to build a cartoon-inspired robot for Kampf’s dog, Smudo. The idea is fairly straightforward: a device that “makes a dog walk itself” by dangling a piece of sausage in front of their head. The contraption consists of a lightweight, ergonomic aluminum harness that bends over Smudo, along with […] [...]



The BF 15+15W open source power amp

Mon, 14 Nov 2016 13:25:56 +0000

Pinned onto Dangerous PrototypesBoris Landoni from Open Electronics writes about the BF 15+15W open source power amp: The amplifier revolves around a monolithic integrated circuit for universal use, that is composed of two BF amplifier stages having a bridge output, that may be equated to operational amplifiers connected by a bridge and supplied with a low impedance output […] [...]



Log Amplifer — Jupiter Modular Receiver

Mon, 14 Nov 2016 04:33:00 +0000

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Pinned onto QRPHB

SECTION 7  — Log AmplifierClick for the Master Index to this project After many experiments and 4 versions, I settled on my simplest design. The AD8307 splendidly responds to input signals from DC to ~ 500 MHz, so it can work well for a DC or ZIF receiver. However, any pulsing noise on its positive […](image)



App note: Advantages of eFuses versus PTC resettable fuses

Sun, 13 Nov 2016 17:00:52 +0000

Pinned onto Dangerous PrototypesThe advantage of eFuses an application note from ON Semiconductors. Link here (PDF) Overcurrent protection is a basic necessity for electrical devices. While many people are familiar with fuses and household circuit breakers, few are intimately familiar with the kinds of overcurrent protection devices that are found in electronics. Though not a comprehensive list, there […] [...]



Take a break from coding and take VisionMobile’s developer survey

Sun, 13 Nov 2016 16:36:48 +0000

Pinned onto Arduino BlogOur friends at VisionMobile have just launched their 12th developer survey, focusing on a 360-view of developer tools, skills and salaries. The State of the Developer Nation Survey features questions on topics like programming languages, platforms, app categories, new technologies, revenue models, IoT verticals, and more. Not to mention, this 15-minute survey is actually fun! Based on your responses, you’ll get a personalized […] [...]



App note: LDC0851 quick-start guide

Sun, 13 Nov 2016 13:00:08 +0000

Pinned onto Dangerous PrototypesTexas Instrument’s differential inductive switch LDC0851 application guide. Link here (PDF) Texas Instruments introduced the LDC1000 in 2012, the industry’s first inductance to digital converter. LDC1000 revolutionized the world of proximity sensing by delivering increased reliability, high resolution, and lower total system cost. The LDC1000 was soon followed by second generation multi-channel LDC devices like […] [...]



Skill Sunday: Surface Mount Soldering

Sun, 13 Nov 2016 03:58:00 +0000

Pinned onto FreetronicsSurface mount parts can be so small that assembling surface mount projects can seem like magic! However, nowadays with the increasing prevalence of surface-mount technology (SMT)  knowing how to put SMT projects together has become an increasingly important skill. Luckily we have put together a great tutorial to help you get started with SMT assembly. […] [...]



Bidirectional 4-Cell Li-Ion Charger

Sat, 12 Nov 2016 14:00:53 +0000

Pinned onto EEWebThe MCP1630V Bi-directional 4 Cell Li-Ion Charger Reference Design demonstrates the use of a bidirectional buck-boost converter used to charge multiple series cell Li-Ion batteries with the presence of an input source (boost) and provide a regulated output voltage when the input source is removed (buck). The board also serves as a platform to evaluate […] [...]



GPS Disciplined Oscillator review and teardown

Sat, 12 Nov 2016 08:00:16 +0000

Pinned onto Andys WorkshopYou may recall that about a year ago I built a frequency counter based on an FPGA and an Android user interface. I called it Nanocounter and you can read about it here if you haven’t already done so. One of the basic requirements for building a frequency counter is the ability to calibrate it […] [...]



List of best online circuit simulator

Sat, 12 Nov 2016 04:23:47 +0000

Pinned onto GadgetronicxCircuit simulation platforms will be the first thing that comes to our mind when we want to make design real quick. It eliminates the need to put the real components together to see how it works. It just takes few keystrokes and mouse movements to see your design  results. Today the world is going online, […] [...]



Keep smoke out of your apartment with an automated fan array

Fri, 11 Nov 2016 20:29:57 +0000

Pinned onto Arduino BlogImgur user “Bodaciousbus” set up his apartment window fans to only circulate air when not filled with smoke. Living in a communal area like an apartment or condo has its benefits, but there are several hassles to deal with as well. One in particular are neighbors who smoke right outside. If you’d like to leave a window open for ventilation, […] [...]



Realizing Industry 4.0 Essential System Considerations

Fri, 11 Nov 2016 18:30:53 +0000

Pinned onto EEWebEveryone in the automation industry has heard the buzzword of "Industry 4.0," a phrase first coined in 2011 at the Hanover fair. This industrial concept envisions the factories of tomorrow as vastly more integrated, automated, and flexible. Faster and more efficient, they will churn out the goods desired by a changing market place. It is […] [...]



Make a WiFi-controlled mini robot using the new MKR2UNO

Fri, 11 Nov 2016 15:08:34 +0000

Pinned onto Arduino BlogA few days ago, we launched the MKR2UNO Adapter, which enables you to easily turn an Arduino Uno form factor project into a MKR1000-based one. Simply mount your IoT board to the adapter, plug in any Uno shield and have a wireless device in no time. Our newly-published tutorial provides a step-by-step overview of how to build a WiFi-controllable robot using the MKR2UNO Adapter with a MKR1000 and […] [...]



XBOX 360 GPU die decap: A look at the graphics processor silicon

Fri, 11 Nov 2016 14:44:57 +0000

Pinned onto Dangerous PrototypesA teardown video of an XBOX 360 and analysis of GPU silicon die from Electronupdate. So, what makes an XBOX tick? One of the most notable parts will be the graphics sub system… and at the heart of it, the GPU. The GPU die is bonded onto a substrate with an associated frame buffer just […] [...]



100W AF dummy load

Fri, 11 Nov 2016 09:00:22 +0000

Pinned onto Dangerous PrototypesDilshan Jayakody has published a new build: This is a quick post to showcase 100W 4 channel AF dummy load which we build to test the output stages of audio power amplifiers. This dummy load use 4, 8Ω 100W wire wound resistors which are available in eBay. In this unit all 4 resistors are mounted on […] [...]



Arduino Clock

Fri, 11 Nov 2016 05:41:00 +0000

Pinned onto FreetronicsIf you are getting bored of your current clock why not have a shot at making your own? Barzok has put together a great tutorial explaining how you can use a number of small LED matrix to build your own very professional looking clock. Although the time display looks fabulous,  it is the Arduino and […] [...]



Control a lamp with an NES Zapper and Arduino

Fri, 11 Nov 2016 00:15:39 +0000

Pinned onto Arduino BlogIf you grew up in ’80s or early ’90s and owned a Nintendo system, chances are you’ve played Duck Hunt. In the classic light gun shooter video game, players would aim their NES Zappers at duck targets as they appeared on the TV screen. So what do you do when you still own the once-popular accessory? If you’re Warner Skoch, you turn it into a controller for your lamp […] [...]



ChipKIT based weather station using BME280 sensor module

Thu, 10 Nov 2016 23:07:08 +0000

Pinned onto Dangerous PrototypesA comprehensive tutorial on making a chipKIT based weather station using BME280 sensor module from Embedded Lab: BME280 is a fully integrated environmental unit from Bosch that combines sensors for pressure, humidity, and temperature in a tiny 8-pin metal-lid LGA package of size 2.5 x 2.5 x 0.93 mm³. Because of its compact size, ease […] [...]



Burn EPROMs with an Arduino Mega

Thu, 10 Nov 2016 16:05:59 +0000

Pinned onto Arduino BlogIf you’ve got a cartridge-based gaming system, this EPROM burner will let you load whatever game you want! Robson Couto recently acquired an old SNES. A great console for its time, but it only came with one cartridge, a bootleg copy of Mortal Kombat. Legalities aside, he decided that he would experiment with his own bootleg cartridge […] [...]



First GD32 tests

Wed, 09 Nov 2016 23:42:31 +0000

Pinned onto Dangerous PrototypesSjaak has published a new build, the STM32/GD32F103 QFN32 breakout board: Uptill now I used 0603 sized resistors and capacitors but for this project I switched to 0402 to save a few mm on the board. I have soldered many challenging chip packages so I felt confident. The technique is the same as for bigger […] [...]



Clock System Design for Digital Audio Application Based on DIR9001, PCM3070 and MSP430

Wed, 09 Nov 2016 21:00:39 +0000

Pinned onto EEWebDigital Audio is widely used in consumer electronics such as Soundbar, Smart TV, Home Theater, and so on. Audio sampling frequency and system clock source are varied in different application. Clock design is key for system reliability and performance. This paper presents clock system design technique for Digital Audio application base on TI hero solution. […] [...]



The Synth Bike is a mobile music machine

Wed, 09 Nov 2016 15:24:17 +0000

Pinned onto Arduino BlogWith a speaker on the back and a drum machine on the front, what can possibly go wrong? After riding his bike home after a synthesizer get together, Sam Battle decided to actually combine these two pursuits, transforming an iconic 1973 Raleigh Chopper into a mobile synthesizer. Though his first try was rather crude, using an Oyster card stuck […] [...]



oCat is a real-time tracker for popular cat videos

Wed, 09 Nov 2016 05:49:16 +0000

Pinned onto Arduino BlogOver the last couple of years, cat videos have become the undisputed champions of the web. Whether it’s kittens playing with their shadows to failed jump attempts to giving each another massages, we’re all guilty of watching a few of these clips from time to time (yes, even at work). Built with this in mind, oCat is a real-time tracker for feline-related activity […] [...]



How To Choose a Power Supply?

Wed, 09 Nov 2016 05:30:52 +0000

Pinned onto Build Electronic CircuitsThere’s some confusion going on when it comes to how to choose a power supply. So, I thought I’d clear up some doubts, and give you a simple, beginner-friendly way of choosing a power supply. Let’s start with the basics. A power supply has a voltage and a current specification: The voltage is the output […] [...]



Smart Home Dashboard

Wed, 09 Nov 2016 03:13:00 +0000

Pinned onto FreetronicsOne difficulty facing hobbyists who undertake home automation projects, is finding a common platform to centrally control all aspects of their smart home. Justin Unterreiner has attempted to solve this problem with his smart home dashboard. The project uses a Raspberry Pi and a touch screen to run a customisable interface to control different smart […] [...]



Yet another Arduino clock

Tue, 08 Nov 2016 16:21:34 +0000

Pinned onto Dangerous PrototypesSverre Holm blogged about his Arduino clock project: Its main features are: Controlled by a GPS module outputting data over an RS232 serial interface, and handled with the TinyGPS++ library Shows raw GPS data such as UTC time and date, position, altitude, and number of satellitess Shows derived GPS data such as 6-digit locator Finds local […] [...]



RC vehicles modified for sip-and-puff control

Tue, 08 Nov 2016 14:16:36 +0000

Pinned onto Arduino BlogThese toy cars are modified for sip-and-puff controls, where one lightly sucks or blows air as an interface. If you have certain disabilities, use of your hands can be difficult if not impossible. An alternative is an interface known as sip-and-puff, which allows for control of electronics by producing a small air flow with your […] [...]



40W Single Port MAX5971A Current Sensing

Mon, 07 Nov 2016 20:00:23 +0000

Pinned onto EEWebMany Power-over-Ethernet (PoE) power sourcing equipment (PSE) single port applications require real-time knowledge of the powered device (PD) current used after startup. The MAX5971A PSE controller with an Integrated MOSFET is capable of delivering up to 40W in to a single port using endpoint or midspan modes. The MAX5971A features current foldback during startup and normal operation, […] [...]



Become a pinball wizard on this 3D-printed machine

Mon, 07 Nov 2016 18:41:18 +0000

Pinned onto Arduino Blog“Tony the Pinball Wizard” has successfully 3D-printed a fully-functional pinball machine. The retired software engineer provides a detailed writeup, beginning with pinball’s roots in the 1700s to its eventual fall from popularity in the 1990s and 2000s. If you find this interesting, you could likely pick one up on Craigslist, but Tony instead decided to build his own. This […] [...]



Dtto is a 3D-printed, self-configurable modular robot

Mon, 07 Nov 2016 17:29:59 +0000

Pinned onto Arduino BlogCongratulations to the winner of this year’s Hackaday Prize, Alberto Molina Perez! Inspired by Bruce Lee’s famous water quote, Dtto is a self-reconfigurable robot that can adopt any shape by simply changing the position and connection of its 3D-printed modules. A coupling mechanism on both ends allows the sections to assemble themselves in various configurations and carry out complex tasks in unison. They can chain together […] [...]



100W AF dummy load

Mon, 07 Nov 2016 10:38:00 +0000

Pinned onto Dilshan R JayakodyThis is a quick post to showcase 100W 4 channel AF dummy load which we build to test the output stages of audio power amplifiers. This dummy load use 4, 8Ω 100W wire wound resistors which are available in eBay. In this unit all 4 resistors are mounted on 170mm × 40mm × 60mm high […] [...]



Particle Photon Gas Detector

Mon, 07 Nov 2016 05:39:00 +0000

Pinned onto FreetronicsUndetected gas leaks can have extremely nasty consequences. Unlike a leaking tap, a gas leak can be at risk of explosion and, in the case of a carbon monoxide leak cause poisoning or even possibly death. One way to avoid these consequences is to acquire a gas detector, or even better, to make your own! This […] [...]



Smallest Audio Band Spectrum analyzer TI TMS320 DSP FFT Implementation with 96×16 OLED display

Sun, 06 Nov 2016 22:05:00 +0000

Pinned onto CircuitvalleyIn this quick little demo i will show you real time 256 point audio band spectrum analyzer, i will be using ezdsp5502 board , which has TMS320VC5502 and for input signal sampling we are using onboard audio codec TLV320AIC3204B to sample input signal at 48Khz sampling rate. its  post is not going to be tutorial […] [...]